function a(){

    function b(){

        function c(){

        }
        c()
    }
    b()
}
a()


a defined    a.[[scope]]  -->  0:GO{}

a doing       a.[[scope]]  -->  0:aAO{}
                                1:GO{}

b defined    b.[[scope]]  -->   0: aAo{}
                                 0:GO{}

b doing       b.[[scope]]  -->  0: bAO{}
                                1:aAO{}
                                2:GO{}

c defined    c.[[scope]]  -->   0: bAo{}
                                1:aAO{}
                                2:GO{}

c doing       c.[[scope]]  -->  0: cAO{}
                                1:bAO{}
                                2:aAO{}
                                3.GO{}

